Hippos are unable to submerge in the few remaining water holes...在仅剩的几个水坑里，河马根本无法没入水中。But exactly where hippos sit on the artiodactyl family tree has proved devilishly difficult to discern.河马也属于偶蹄目,这点专家并无异议,但是它们到底位在偶蹄动物演...
He had a heart attack and all attempts to resuscitate him failed.他的心脏病发作，所有抢救他的努力都失败了。A policeman and then a paramedic tried to resuscitate her.一名警察和一位护理人员先后试图救活她。He has submitted a bid to resuscitate the struggling maga...